Upon opening the map chest of a shipwreck or some ocean ruins chests, a server can significantly lag, from just a few seconds of frozen frames, to the crash of a server. The only common thing about these chests is the fact that they contain a Buried Treasure Map. I haven't tested this on single player.
MC-253948
Opening loot chests containing Buried Treasure Mpas can cause severe amounts of lag.
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We're tracking this issue in MC-249136, so this ticket is being resolved and linked as a duplicate.
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